Sodium Phenylbutyrate Powder Recalled for Impurity Specification Failures
SigmaPharm Laboratories is recalling Sodium Phenylbutyrate Powder due to failed impurity and degradation specifications detected during routine testing. The affected lots are distributed nationwide.
What this means for you
Minor labeling or packaging issue, or a voluntary precautionary recall. Risk of harm is low but real — follow the manufacturer's instructions.
Our severity reasoning: This is an FDA Class II recall. The source states only that impurity/degradation specifications failed during routine testing, with no reported illnesses or injuries. The hazard is technical noncompliance rather than acute risk of harm, supporting a Moderate severity classification.
Plain-English summary
SigmaPharm Laboratories LLC is recalling Sodium Phenylbutyrate Powder, 250 grams, packaged in 500 cc HDPE bottles with 53 mm CRC caps. The recall affects 1,192 bottles distributed nationwide. The recall was initiated because out-of-specification impurity results were obtained during routine testing, indicating that the product did not meet required impurity and degradation specifications.
The affected lots are: 2005401, 2005501, 2005601, 2005701 (expiration February 2023) and 2101401, 2101501 (expiration February 2024). The product is identified by NDC 42794-086-14.
Patients currently taking this medication should consult their healthcare provider or pharmacist regarding their treatment. Healthcare providers should advise patients not to stop taking their medication without medical guidance, and should work with their pharmacy to obtain replacement medication or appropriate alternatives.
The recalled product
- Product
- SODIUM PHENYLBUTYRATE (SODIUM PHENYLBUTYRATE)
- Brand
- SODIUM PHENYLBUTYRATE
- Manufacturer
- SigmaPharm Laboratories LLC
- Category
- Drug — Prescription Powder
- Hazard
- impurity
- degradation
- specification-failure
Is your product affected?
Check your packaging against the codes below. If any of them match, the product is part of this recall.
Lot numbers (8)
- Lots 2005401
- 2005501
- 2005601
- 2005701
- Exp FEB 2023
- Lots 2101401
- 2101501
- Exp FEB-2024
UPCs (1)
- 0342794086144
Distribution
Distributed nationwide across the United States.
Related recalls
Same brand · SODIUM PHENYLBUTYRATE
- ModerateSodium Phenylbutyrate Powder Recalled for Failed Impurities Specifications
FDA (Drugs) · 2021-09-01
Same category
- CriticalWarfarin Tablets Recalled After Mix-Up Between 2.5 mg and 5 mg Strengths
FDA (Drugs) · 2026-07-21
- HighBeak & Skiff Alcohol Antiseptic Sanitizer recalled for acetaldehyde contamination
FDA (Drugs) · 2026-06-17
- SevereCIMZIA injection recalled due to lack of sterility assurance
FDA (Drugs) · 2026-05-27
- SevereAtomoxetine Capsules Recalled Due to Labeling Mix-Up Error
FDA (Drugs) · 2026-05-27
- LowPrimidone Tablets Recalled Due to Cross-Contamination with Acemetacin
FDA (Drugs) · 2026-05-27